메타데이터
| 항목 |
값 |
| Designation |
C/2021 V1 (Rankin) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-04-30T08:37:20.375040Z |
| Orbit solution date (soln_date, UTC) |
2022-02-14T01:12:42Z |
| Obs used |
67 |
| NEO |
- |
| M1 |
15.900 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2021-11-05T03:51:31.478400Z |
| Discovery magnitude (MPC) |
20.97 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2021-11-16.0000000 |
| e |
0.99556441 |
| q (au) |
3.013528 |
| a (au) |
679.397411 |
| i (deg) |
71.440704 |
| Ω (om, deg) |
207.653208 |
| ω (w, deg) |
195.103041 |
| M (ma, deg) |
359.990797 |
밝기
산란 + 전체 선형
$$
M_a = (14.742 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
14.742 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.811 |
| k |
1.000 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
10:51:42.29 |
-40:37:01.7 |
HIP 53218 |
19.81 |
| 2026-06-01 12:00 |
10:51:44.68 |
-40:34:55.8 |
HIP 53218 |
18.24 |
| 2026-06-02 00:00 |
10:51:47.16 |
-40:32:50.4 |
HIP 53218 |
16.77 |
| 2026-06-02 12:00 |
10:51:49.74 |
-40:30:45.5 |
HIP 53218 |
15.46 |
| 2026-06-03 00:00 |
10:51:52.42 |
-40:28:41.1 |
HIP 53218 |
14.33 |
| 2026-06-03 12:00 |
10:51:55.19 |
-40:26:37.2 |
HIP 53218 |
13.43 |
| 2026-06-04 00:00 |
10:51:58.06 |
-40:24:33.8 |
HIP 53218 |
12.80 |
| 2026-06-04 12:00 |
10:52:01.02 |
-40:22:30.9 |
HIP 53218 |
12.49 |
| 2026-06-05 00:00 |
10:52:04.08 |
-40:20:28.5 |
HIP 53218 |
12.51 |
| 2026-06-05 12:00 |
10:52:07.23 |
-40:18:26.7 |
HIP 53218 |
12.87 |
| 2026-06-06 00:00 |
10:52:10.47 |
-40:16:25.5 |
HIP 53218 |
13.53 |
| 2026-06-06 12:00 |
10:52:13.81 |
-40:14:24.7 |
HIP 53218 |
14.46 |
| 2026-06-07 00:00 |
10:52:17.24 |
-40:12:24.5 |
HIP 53218 |
15.60 |
| 2026-06-07 12:00 |
10:52:20.76 |
-40:10:24.9 |
HIP 53218 |
16.91 |
| 2026-06-08 00:00 |
10:52:24.37 |
-40:08:25.9 |
HIP 53218 |
18.35 |
| 2026-06-08 12:00 |
10:52:28.08 |
-40:06:27.4 |
HIP 53218 |
19.89 |
| 2026-06-09 00:00 |
10:52:31.87 |
-40:04:29.5 |
HIP 53307 |
20.74 |
| 2026-06-09 12:00 |
10:52:35.76 |
-40:02:32.1 |
HIP 53307 |
20.93 |
| 2026-06-10 00:00 |
10:52:39.74 |
-40:00:35.4 |
HIP 53307 |
21.30 |
| 2026-06-10 12:00 |
10:52:43.80 |
-39:58:39.3 |
HIP 53307 |
21.85 |
| 2026-06-11 00:00 |
10:52:47.96 |
-39:56:43.7 |
HIP 53307 |
22.56 |
| 2026-06-11 12:00 |
10:52:52.21 |
-39:54:48.8 |
HIP 53307 |
23.41 |
| 2026-06-12 00:00 |
10:52:56.55 |
-39:52:54.5 |
HIP 53307 |
24.39 |
| 2026-06-12 12:00 |
10:53:00.97 |
-39:51:00.8 |
HIP 53307 |
25.49 |
| 2026-06-13 00:00 |
10:53:05.48 |
-39:49:07.7 |
HIP 53307 |
26.68 |
| 2026-06-13 12:00 |
10:53:10.08 |
-39:47:15.3 |
HIP 53307 |
27.96 |
| 2026-06-14 00:00 |
10:53:14.77 |
-39:45:23.5 |
HIP 53307 |
29.31 |
| 2026-06-14 12:00 |
10:53:19.55 |
-39:43:32.3 |
HIP 53307 |
30.73 |
| 2026-06-15 00:00 |
10:53:24.41 |
-39:41:41.8 |
HIP 53307 |
32.20 |
| 2026-06-15 12:00 |
10:53:29.35 |
-39:39:51.9 |
HIP 53264 |
32.48 |
| 2026-06-16 00:00 |
10:53:34.39 |
-39:38:02.8 |
HIP 53264 |
30.64 |
| 2026-06-16 12:00 |
10:53:39.51 |
-39:36:14.2 |
HIP 53264 |
28.83 |
| 2026-06-17 00:00 |
10:53:44.71 |
-39:34:26.4 |
HIP 53264 |
27.08 |
| 2026-06-17 12:00 |
10:53:49.99 |
-39:32:39.2 |
HIP 53264 |
25.39 |
| 2026-06-18 00:00 |
10:53:55.36 |
-39:30:52.7 |
HIP 53264 |
23.77 |
| 2026-06-18 12:00 |
10:54:00.82 |
-39:29:06.9 |
HIP 53264 |
22.23 |
| 2026-06-19 00:00 |
10:54:06.35 |
-39:27:21.8 |
HIP 53264 |
20.80 |
| 2026-06-19 12:00 |
10:54:11.97 |
-39:25:37.4 |
HIP 53264 |
19.50 |
| 2026-06-20 00:00 |
10:54:17.66 |
-39:23:53.7 |
HIP 53264 |
18.35 |
| 2026-06-20 12:00 |
10:54:23.44 |
-39:22:10.7 |
HIP 53264 |
17.40 |
| 2026-06-21 00:00 |
10:54:29.30 |
-39:20:28.4 |
HIP 53264 |
16.65 |
| 2026-06-21 12:00 |
10:54:35.24 |
-39:18:46.8 |
HIP 53264 |
16.16 |
| 2026-06-22 00:00 |
10:54:41.26 |
-39:17:05.9 |
HIP 53264 |
15.93 |